ATS Diesel Stage 4 Transmission Package

2003–2004 Dodge Ram 2500 / Ram 3500 4WD 48RE Transmission

3099442272

Overview:

The ATS Diesel Stage 4 Transmission Package is a comprehensive upgrade solution designed specifically for 2003 to 2004 Dodge Ram 2500 and Ram 3500 models equipped with the 4WD 48RE transmission. Engineered to enhance durability and performance, this package is ideal for diesel truck owners who demand reliable power delivery and improved transmission longevity under heavy-duty conditions.

This Stage 4 package is tailored for enthusiasts and professionals who push their trucks in towing, hauling, and off-road applications. By addressing common transmission weaknesses and optimizing internal components, ATS Diesel provides a robust upgrade that ensures smoother shifts, increased torque capacity, and overall transmission resilience.

Key Features:

The ATS Diesel Stage 4 Transmission Package incorporates advanced engineering and premium components to deliver superior performance and reliability. Key features include:

• Heavy-duty 48RE transmission rebuild kit designed for 2003–2004 Dodge Ram 2500 and 3500 4WD models
• Upgraded internal clutches and bands for enhanced holding power and reduced slippage
• Reinforced input and output shafts to withstand increased torque loads
• Precision-machined components for improved shift quality and durability
• High-performance seals and gaskets to prevent leaks and maintain hydraulic integrity
• Optimized valve body components for consistent and reliable shift timing
• Comprehensive kit designed to address common failure points in the 48RE transmission

Construction & Design:

Built with heavy-duty materials and engineered for maximum strength, the ATS Diesel Stage 4 Transmission Package features components manufactured from high-grade steel alloys and precision-machined to exacting tolerances. Each part is designed to withstand the rigors of demanding diesel applications, including high torque output and frequent towing cycles.

The package’s design focuses on reinforcing the transmission’s weak points, such as clutch packs and shafts, while maintaining factory compatibility for straightforward installation. This ensures a balance between durability and drivability without compromising the transmission’s original functionality.

Installation & Fitment:

This transmission package is a direct fit for 2003 and 2004 Dodge Ram 2500 and Ram 3500 models equipped with the 4WD 48RE transmission. Installation requires a professional or experienced technician familiar with automatic transmission rebuilds. The kit includes all necessary components to perform a complete Stage 4 rebuild, but installation involves disassembly of the transmission and should be performed with proper tools and service manuals.

No major modifications to the vehicle are required, as the package is designed to maintain OEM fitment and function. Proper installation ensures optimal performance and longevity of the transmission under heavy-duty use.

What's Included:

• Upgraded clutch packs and bands
• Reinforced input and output shafts
• High-performance seals and gaskets
• Precision-machined valve body components
• Complete rebuild kit components tailored for 48RE transmission

Ideal For:

The ATS Diesel Stage 4 Transmission Package is ideal for Dodge Ram 2500 and 3500 owners who require enhanced transmission durability and performance. It is especially suited for:

• Diesel truck enthusiasts seeking improved shift quality and reliability
• Owners frequently towing heavy loads or hauling demanding payloads
• Off-road drivers who need a transmission capable of handling increased stress
• Fleet operators looking to extend transmission service life and reduce downtime

ATS Diesel Performance builds diesel upgrade solutions engineered for higher torque, towing confidence, and competition-level durability. Best known for performance-built transmissions, ATS also offers turbochargers, exhaust and fuel system components, and other supporting parts designed to handle heavy loads and elevated power on modern diesel trucks.